What phrase best summarizes the theory of evolution by natural selection? a. life evolves from other life. b. only the strongest individuals survive. c. over time, species evolve by adapting to their environment. d. traits acquired over a lifetime are passed onto offspring. over time insects have become resistant to insecticides. which process explains how insecticide resistance developed? a. extinction b. speciation c. biological inheritance d. natural selection

The many volcanoes located along the edge of the pacific ocean make up the ring of fire. how does subduction play a role in the volcanic activity in the ring of fire?

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.

Ascientific idea becomes valid when it is what?